B. They were the largest participants in the Great Migration.
Because they knew that Germans could sink any ship they want. They could sink civilian ships. Back then, the only way to travel long distances was by boat, because passenger airplanes had not been invented. The Germans could now sink them if they wanted to travel somewhere, so they either risk their life or not go on trips.
I have the same question I’m looking for the answer
A: He wanted to quickly end the war in the Pacific without invading.
Germany had surrender by this point in the war, and it was only Japan left, they didn't want to cause more casualties by a full-scale invasion, so they wanted to use the bombs in hopes to end the war for good.